So, if I'm hearing you correctly, you're saying that even though the MIL has made a lovely hot mess of her own life, that it's the OP's responsibility to care for her, because charity?
I'm more of the belief that the homeless, abused animals, refugees, the infirm, the addicted, the elderly, the powerless, the abused, are the ones deserving of our charity. Those that are where they are due to
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